宁夏永宁地区中产农田土壤质量评价  

Soil Quality Evaluation of Middle-class Farmland in Yongning Area of Ningxia

作　　者：刘海燕 马玉学 赵志鹏 赵银鑫 LIU Hai-yan;MA Yu-xue;ZHAO Zhi-peng(Ningxia Hui Autonomous Region Basic Geological Survey Institute,Yinchuan,Ningxia 750021;Ningxia Hui Autonomous Region Hydrology Environmental Geological Survey Institute,Yinchuan,Ningxia 750021)

机构地区：[1]宁夏回族自治区基础地质调查院,宁夏银川750021 [2]宁夏回族自治区水文环境地质调查院,宁夏银川750021

出　　处：《安徽农业科学》2023年第3期47-51,共5页Journal of Anhui Agricultural Sciences

摘　　要：宁夏永宁地区为银川平原主要的农业产区之一,由于耕地地力及养分分布不同,永宁地区农田以中产田为主。为进一步了解永宁地区农田土壤环境质量,选取永宁地区农田表层土壤中与农作物生长关系密切的Cd、Hg、As、Cu、Pb、Cr、Zn、Ni 8种重金属指标,N、P、K、有机质、Fe、MgO、CaO、S、Cu、Mn、Mo、Zn 12种生长必需营养元素,Se、I、F 3种有益元素指标作为评价因子。应用单因子指数法和尼梅罗综合污染指数法,从不同角度对土壤环境质量做出评价。依据土壤测试结果,发现永宁地区土壤pH偏碱性;永宁地区农田土壤中8项重金属元素指标均未超标,满足耕种区作物正常生长、人体健康需要。永宁地区农田土壤清洁度均在基本清洁区以上,为一等质量区。土壤必需元素多为较丰富以上,均满足耕种区农作物正常生长需要;氮(N)含量在较缺乏-中等之间;有机质(SOC)含量多为缺乏,亏缺尤为严重。有益元素碘含量基本全属于适量区,分布较均匀;硒含量较低;氟元素含量富足。Yongning area of Ningxia is one of the main agricultural production areas in Yinchuan plain.Due to the different soil fertility and nutrient distribution of cultivated land,the farmland in Yongning area is mainly medium yield cropland.In order to further understand the farmland soil environmental quality in Yongning area,this paper selects 8 heavy metals,including Cd,Hg,As,Cu,Pb,Cr,Zn and Ni,which are closely related to the growth of agricultural crops,N,P,K,organic matter(OM),Fe,MgO,Cao,S,Cu,Mn,Mo and Zn are 12 essential nutrient elements for growth,and Se,I and F are three beneficial elements as evaluation factors.The single factor index and nimero comprehensive pollution index were used to evaluate the soil environmental quality from different angles.According to the soil test results,it is found that the soil pH value in Yongning area is alkaline;the eight heavy metal elements in farmland soil in Yongning area did not exceed the standard,which met the needs of normal crop growth and human health in farming area.The cleanliness of farmland soil in Yongning area is above the basic clean area,which is a first-class quality area.Most of the essential elements in the soil are more abundant,which can meet the normal growth needs of crops in the farming area;the content of N is between lack and medium;the content of OM is mostly lack,especially serious.The content of beneficial element I basically belongs to the appropriate area and is evenly distributed;Se content is low;rich in F.

关 键 词：土壤质量 单因子评价 综合评价 重金属元素 营养元素 有益微量元素 

分 类 号：X825[环境科学与工程—环境工程]